From e3b557809604d036af6e00c60f012c2025b59a5e Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Sat, 11 Feb 2023 13:38:04 +0100
Subject: Vendor import of llvm-project main
 llvmorg-16-init-18548-gb0daacf58f41, the last commit before the upstream
 release/17.x branch was created.

---
 llvm/lib/BinaryFormat/Dwarf.cpp | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

(limited to 'llvm/lib/BinaryFormat/Dwarf.cpp')

diff --git a/llvm/lib/BinaryFormat/Dwarf.cpp b/llvm/lib/BinaryFormat/Dwarf.cpp
index c88425711656..a9bbe41125b1 100644
--- a/llvm/lib/BinaryFormat/Dwarf.cpp
+++ b/llvm/lib/BinaryFormat/Dwarf.cpp
@@ -365,10 +365,11 @@ unsigned llvm::dwarf::LanguageVendor(dwarf::SourceLanguage Lang) {
   }
 }
 
-Optional<unsigned> llvm::dwarf::LanguageLowerBound(dwarf::SourceLanguage Lang) {
+std::optional<unsigned>
+llvm::dwarf::LanguageLowerBound(dwarf::SourceLanguage Lang) {
   switch (Lang) {
   default:
-    return None;
+    return std::nullopt;
 #define HANDLE_DW_LANG(ID, NAME, LOWER_BOUND, VERSION, VENDOR)                 \
   case DW_LANG_##NAME:                                                         \
     return LOWER_BOUND;
@@ -691,13 +692,13 @@ StringRef llvm::dwarf::IndexString(unsigned Idx) {
   }
 }
 
-Optional<uint8_t> llvm::dwarf::getFixedFormByteSize(dwarf::Form Form,
-                                                    FormParams Params) {
+std::optional<uint8_t> llvm::dwarf::getFixedFormByteSize(dwarf::Form Form,
+                                                         FormParams Params) {
   switch (Form) {
   case DW_FORM_addr:
     if (Params)
       return Params.AddrSize;
-    return None;
+    return std::nullopt;
 
   case DW_FORM_block:          // ULEB128 length L followed by L bytes.
   case DW_FORM_block1:         // 1 byte length L followed by L bytes.
@@ -715,12 +716,12 @@ Optional<uint8_t> llvm::dwarf::getFixedFormByteSize(dwarf::Form Form,
   case DW_FORM_rnglistx:       // ULEB128.
   case DW_FORM_GNU_addr_index: // ULEB128.
   case DW_FORM_GNU_str_index:  // ULEB128.
-    return None;
+    return std::nullopt;
 
   case DW_FORM_ref_addr:
     if (Params)
       return Params.getRefAddrByteSize();
-    return None;
+    return std::nullopt;
 
   case DW_FORM_flag:
   case DW_FORM_data1:
@@ -753,7 +754,7 @@ Optional<uint8_t> llvm::dwarf::getFixedFormByteSize(dwarf::Form Form,
   case DW_FORM_strp_sup:
     if (Params)
       return Params.getDwarfOffsetByteSize();
-    return None;
+    return std::nullopt;
 
   case DW_FORM_data8:
   case DW_FORM_ref8:
@@ -775,7 +776,7 @@ Optional<uint8_t> llvm::dwarf::getFixedFormByteSize(dwarf::Form Form,
   default:
     break;
   }
-  return None;
+  return std::nullopt;
 }
 
 bool llvm::dwarf::isValidFormForVersion(Form F, unsigned Version,
-- 
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